 '74 2.0 Throttle Body Questions |
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| loco914 |
 Sep 16 2026, 10:54 AM
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#1
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Thy wheels have left the rail...  Group: Members Posts: 48 Joined: 1-April 10 From: Amarillo, TX Member No.: 11,542 Region Association: None  |
Replaced the TPS and while the throttle body is out, I decided to clean it. During this process, I noticed a couple of things that I do not know if they are issues or not.
#1 The hole bleow the idle set screw (that I so dutifully cleared of many years of gunk) has no corresponding hole in the intake plenum. In fact, it appears to have been closed off intentionally. See Pic #1.  #2 The Vacuum line nipple that corresponds to the tiny hole above the butterfly in the throttle body is also closed off intentionally. See Pic #2.  Stock FI car, pertronix electronic ignition as info. Wondering if these are issues at all or do they need correction?? Thank you! |
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| rjames |
Sep 16 2026, 05:12 PM
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#2
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I'm made of metal Group: Members Posts: 4,474 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest 
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That's the advance port. The retard port is below the butterfly and on the other side. The advanced port is plugged on later TBs.
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Posts in this topic
loco914 '74 2.0 Throttle Body Questions Sep 16 2026, 10:54 AM
emerygt350 That hole should be filled in the plenum. The plu... Sep 16 2026, 01:09 PM
emerygt350 Oh yeah, I thought that was the throttle linkage b... Sep 16 2026, 05:38 PM |
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